HELP PLEASE! I GOT 9 MINUTES LEFT *YOU WILL RECEIVE BRAINLIEST*

Bob bought a solid rubber doorstop to keep the air flowing between the rooms of his apartment.

Sides:
1.5 cm, 2 cm, 2.5 cm, 5 cm

What is the minimum amount of rubber used to make the doorstop?
a) 5cm
b) 7.5 cm
c) 32 cm
d) 33 cm

THANK YOU SO MUCH!!